Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
thieu nien » thien nhien
ban thanh » ban hanh, ban hang
bach tuoc » sach duoc, sach nuoc
nien bach » vien bach, dien sach, mien bac
tang lai » trang lai, tang tai, tang loi
hoc sach » hoc sinh, hoc cac, hoc anh
tuoc ban » thuoc ban, quoc ban, buoc ban
thanh vi » hanh vi, thanh va, thanh ve
lai hoi » dai hoi, lai hoa, lai roi
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (hoc sach)) ky tang lai hoi. thieu nien bach tuoc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ky tang lai hoi. thieu nien bach tuoc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) ky tang lai hoi. thieu nien bach tuoc ban thanh vi cua tre*.